臺灣指數期貨正向二倍型槓桿 ETF（Leveraged 2X）數理結構、四大標的橫截面差異、歷史 11 年回測（2015-2025）與跨週期均線勝率實證

Mathematical Foundations, Empirical Cross-Sectional Comparison of Taiwanese TX Leveraged ETFs, 11-Year Drawdown Recovery (2015-2025), Dynamic Regime-Switching Strategy, Multi-Horizon Moving Average Win Rates, and Net-Withdrawal Retirement Modeling